I've been trying to research online about the difference between an M6 GC with the comp pack vs a standard one in the real world (not just numbers or technical differences), was wondering if anyone here has driven both? I am from the UK and the roads are abysmal around here so the competition set up doesn't sound attractive if it actually means a more stiffer ride compared to standard, but the best examples on sale here have the comp pack, the grand tourer trait is the best aspect of the GC, is that lost with the comp pack? Any input from someone who has experience in both the comp and standard GC would be great! Thanks!

I have just purchased a M6 with competition and executive packages. I haven't driven one without them. For US roads the only thing I can say is that road noise is high for the considered 'luxury' label. And coming from luxury barges like Lexus LS 460 and muscle like 392 SRT Challenger, I can tell that the M6 tries to be both fast and luxurious and I think it accomplishes both in spades. The V8 bi-turbo will *never* have the visceral feel and sound of the Challenger, but it's an exceptional GT car -- that drinks some oil -- and has plenty of technology. I just hope it proves itself to be reliable over the next few years.

I agree with it being worth it. Some subtle details (exhaust and wheels) and of course the extra HP and suspension. I use mostly in economy mode and cant imagine a non comp being that much smoother. I also like that M6 are uncommon, and comp packs are more uncommon!

Thanks for the replies guys, I currently have a 7 series G11 so I'm a bit spoilt on the comfort side, I had a ride in a comp pack M6 GC just now and I was amazed at how comfortable it was! Nothing like the M4 comp I had a ride in.

Ride quality between the M4 and M6 should be about the same. Both cars has the rear subframe and diff directly bolted on to increase torsional rigidity and stiffness.

General ride quality usually is determined by your tirewall height and wheel size. The M6 GC you rode in has a 20 inch wheel on a 30/35 tire. The M4 could have been on wheel sizes of 18, 19 or 20 with tire heights of 40, 35 or 30.

On M cars, there is also dampening speed adjustments you can make to the shocks (EDC). So the M6 could have been on "comfort" and M4 could have been on "Sport or Sport+"

I think spring and shock dampening will be the final factor of ride quality.

All said, I too agree that the M6 is much more comfortable ride on the street than my old E90 M3, on the same EDC setting. However, I actually think the Sport setting on the M6 is already too harsh, maybe I'm just getting old.

I'm ok with the sport setting on my M6 Coupe Comp Pack, but I found that the Comfort setting on the M4 is more bumpy and quite fidgety even when compared to my M6 on Sport+. I'm completely happy with my car in Sport all the time.

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SCOTT26 "So as an admirer of the M5 and a potential customer of an M5 Touring. I would run naked around the streets of Garching if they were to offer one."

I test drove a CP and in the end purchased a none CP due to quicker availability, performance difference not noticeable, main variance was the stiffer ride

This is what I was concerned about the most, for me the M6 would be more of a GT car where it would be cruising around and not really driven spiritedly, so the softer setup on the non cp makes more sense, especially if as you mentioned the stiffer ride was noticeable between them both, thanks for your input